<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        margin: 0px;
    }
    /* 顶部部分 */
    .topnav{
        margin-top: 30px;
        display: flex;
        flex-direction: row; 
		justify-content:space-around;
    }
    .topnav img:nth-child(1){
        width: 20px;
        height: 20px;
    }
    .topnav span:nth-child(2){
        font-size: 20px;
        color: #505050;
    }
    .topnav span:nth-child(3){
        font-size: 17px;
        color: #505050;
        position: relative;
        left: 25px;
    }
    /* 分割线  */
    .line{
        height: 3px;
        background-color: #f2f4f8;
        margin-top: 18px;
    }
    /* 栏目1 */
    .column{
        display: flex;
        flex-direction: column;
        margin-left: 15px;
        margin-top: 15px;
    }
    .column span:nth-child(1){
        color: #505050;
    }
    .column span:nth-child(4){
        color: #b6b7bb;
        margin-top: 15px;
        margin-left: 8px;
    }
    .column span:nth-child(5){
        color: #b6b7bb;
        margin-top: -15px;
        margin-left: 260px;
    }
    /* 状态条 */
    .status{
        height: 2px;
        width: 340px;
        background-color: #dee3ef;
        margin-top: 15px;
        margin-left: 5px;
    }
    .status-green{
        height: 2px;
        width: 5px;
        background-color: green;
        margin-top: -2px;
        margin-left: 6px;
    }
    .text{
        position: absolute;
        left: 40px;
        top: 160px;
    }
    /* 底部部分 */
    .bottomnav{
        height: 50px;
        width: 100%;
        border-top: 2px solid #dee3ef;
        margin-top: 400px;
        display: flex;
        justify-content: space-around;
        align-items: center;
        font-size: 22px;
        color: #505050;
    }
</style>
<body>
    <!-- 顶部部分 -->
    <div class="topnav">
        <img src="../jpg/返回.png" >
        <span>正在下载</span>
        <span>管理</span>
    </div>
    <!-- 分割线 -->
    <div class="line"></div>
    <!-- 栏目1 -->
    <div class="column">
        <span>【注意】课程勘误汇总-20161214</span>
        <!-- 状态条 -->
        <div class="status"></div>
        <div class="status-green"></div>
        <span>1M/S</span>
        <span class="text">0M/29M</span>
    </div>
    <!-- 栏目2 -->
    <div class="column">
        <span>1.1跟简七学理财 导学课【购买前必读，免费试学】</span>
        <!-- 状态条 -->
        <div class="status"></div>
        <div class="status-green"></div>
        <span>等待中</span>
        <span>0M/未知大小</span>
    </div>
    <!-- 栏目3 -->
    <div class="column">
        <span>1.2跟简七学理财 导学课【购买前必读，免费试学】</span>
        <!-- 状态条 -->
        <div class="status"></div>
        <div class="status-green"></div>
        <span>等待中</span>
        <span>0M/未知大小</span>
    </div>
    <!-- 底部部分 -->
    <div class="bottomnav">
        <span>全部暂停</span>
        <span>全部开始</span>
    </div>
</body>
</html>